Bolt lock



,h April zo, 192s. Y 1,581,216

w. LONG BOLT-Loox l Filed August s1, 1925 Patented pr. 20, i'19261.

UNITED STATESl WALTER LONG, or HARRISBURG, ourson.

BomY Loox.

i Application led. August 31, 1925. Serial No. 53,706.

To ull/whom t may concern: .v ,l f A Be it known that I, WALTER LONG, a citi- Zen of the United States, residing at, Harrisburg, in the county of Linn andState of Oregon, have` invented certainY new and useful Improvements in aBolt Lock, o-fwhich the following is a specification. e f

This invention relates to improvementsin bolt locks, andhas for its principal obyect to provide a'highly novel and simple` device for lockinga bolt after thesame has been placed through the members which are to be Vsecured together.

One of the important objects of the .prese ent invention is to provide abolt lock whichvr includes a cylindrical casing having its 1n-` ner end closed, the latter being :provided with a threaded opening through which the threaded shank of the'bolt is adapted to eX- tend, means being provided for lockingthe cylindrical casing against rotation on' the bolt, additional means beingprovide'd for locking the outer end of the casingto Vpre'- vent access to the first mentioned locking means.

A i'urther object isto provide a bolt lock of the. above mentioned character which may be readily and easily operated, the same being further positive and eflicientin locking the bolt against accidentaldisplacement. Y

A. still furthery object istofprovide a bolt lock of the above mentioned character which is simple in construction, inexpensivastrong and durable andfurther well adapted to the purpose. for which it is designed.

Other. objects Yand advantagesv of the invention will become apparent during the course .of the following description taken in connection with the accom-panyingdrawing.

'In the accompanying drawing forming a part of; thisapplication and in which like numerals designate like parts throughout the same:

Figure l is a longitudinal sectional view through the cylindrical casing showing the manner in which the same is disposed over the shank and outer end of the bolt for locking the same. v

Figure 2 is an end lelevation illustrating the hinged closure for the outer end of the cylindrical casing, and

Figure 3 is a sectional view taken approximately on line 3 3 of Figure 1.

In the drawing wherein for the purpose of illustration is shown the preferred embodiment of my invention, the numeral 1 designates lthe bolt, theshank portion of which is externally threaded yforfsubstantially, the entire length thereof asindicated at The outer end of the'bolt is reduced as indicated at 3, andthe purposethereof will'be readily apparent. A tooth or the'Y like, such` as is shown at 4, is formed on the inner end of the shank portion 2 adjacent the headsf of the bolt, and the same is adapted to bitevinto the innermost of the members which is to be secured by the bolt, the head 5 engaging the outer'face ofthe innermost member A inthe manner clearly illustratedin Figure l. The other member is to be secured, as indicated generally at B,

these elments are secured together by the bolt, Yand the locking' means therefor, thel construction of the described.

The locking means for the bolt includes a latter being present-ly substantially cylindrical casing 6, the inner end ofwhich is closed as illustrated at 7'. The inner closed end of the cylindrical casing isA provided with a central threaded opening 8 which permitsthe casing to be threaded onto the threaded shank 2 of the bolt l, the outer face of the inner lend 7 of the cylindrical casing being adapted to engage'the outer face of the member 6 in the manner as shown more clearly in Figure l. The cylindrical casing 6 provides what may be termed as ak nut. The outer' end ofthe cylindrical casing is open, and associated therewith is the hinged closure 9, the hinge therefor being illustrated at 10, the purpose of this closure will also hereinafter be more fully described.

A shoulder 0r lug 11 is arranged on the inner wall of the cylindrical casing6 adjacent the outerend thereof and this shoulder or lug cooperates with the lflat face 12 of a suitable washer 13 which is disposed over the reduced end 3 of theI bolt and the cylindrical casing has been threaded onto the bolt to its innermost position, for holding vand locking the cylindrical casing against further rotation in either direction. As is illustrated more clearly in Figure v3, the reduced portion 3 is substantially rectangular in cross section, and the opening 14 formed in Vthe Washer 13 is also of the sameshape PATENT OFFICE.`

vment or removal of the bolt from the members A and B, as well as from the casing.

In order to remove the bolt, the proper key is inserted in the lock 15 for retracting the bolt 16 from the recess 17 and the cloysure 9 may then be swung outwardly. The

space between the flat face 12 of the washer 18, andthe inner wall of the cylindrical casing 6 permits a suitable tool to be in` serted therein to facilitate the removal of the washer from the reduced end of the bolt, and when the Washer has been disengaged from the outer reduced end of the bolt, the cylindrical casing is then free to rotate to permit the same to be removed from the threaded shank of the bolt.

The-,provision of a bolt lock of the above mentioned character will at all times in sure the positive locking of a bolt, and fun thermore the parts will not work loose, such as frequently happens with the lock nuts now generally associated with bolts. The simplicity in which the present device is constructed enables the saine to be readily and easily assembled or disassembled, and will at all times be positive and efficient in carrying out the purpose for which it is designed. f

lhile I have shown the preferred embodiment of my invention it is to be understood that minor changes in the size, shape and arrangement of parts may be resorted to without departing from the spirit of the invention and the scope of the appended claims.

Having thus described the invention, what I claim as new is 1. In combination with a bolt having its shank threaded, of a lock therefor comprising a cylindrical casing having its inner end closed, said inner end being provided with a threaded opening through which the threaded shank of the bolt extends, means for locking the cylindrical casing against rotation on the bolt, said means comprising a lug arranged on the inner wall of the cylindrical casing adjacent the outer endt-hereof, and a Washer supported on the outer end of the bolt, said washer being provided with a fiat face for engagement with said lug.

2. In combination with a bolt having its shank threaded for substantially its entire length, the outer end of the bolts being reduced, of a lock for the bolt comprising a cylindrical casing having its inner end closed, and its outer end open, said inner end being provided with a threaded opening through which the threaded shank of the bolt extends, means for locking the cylindrical casing against rotation on said bolt, said means comprising a lug arranged on the inner wall of the casing adjacent the outer open end thereof, a washer supported on the reduced outer end of the bolt7 said washer being provided with a flat lug engaging face, and a hinged closure for the outer-open end of the casing.

3. In combination with a bolt having its shank threaded for substantially its entire length, the outer end of the bolts being reduced, of a lock for the bolt comprising a cylindrical casing having its inner end closed, and its outer end open, said inner end being provided with a. threaded opening through which the threaded shank of the bolt extends, means for locking the cylindrical casing against rotation on said bolt, said means comprising a lug arranged on the inner wall of the casing adjacent the outer open end thereof, a washer supported on the reduced outer end of the bolt., said washer being provided with a flat lug engaging face, a hinged closure for the outer open end of the casing, and means for locking the hinged closure.

In testimony whereof I affix my signature.

WALTER LONG. 

